Needle-sharpener.



" usura strate@ rRnDEnIoK WILLIAM fifocknve, or vnivisurmv, ARKANSAS..

NEEnLE-SHARPEER retenes.

Specicaton'of Letters Patent.V Patented Dee. 1.1, 1917.

ppuevatign fi'l'ea August a, 1917. 4Serial No. 134,998.

To al; whom@ 'may camera? Beit knpw'n 'am L raenenpa ijv. 1309K, ING, acitizen ofthe United- States, land4 a resident" tof Van Buren, inthecounty ofv Crawford and State ofArkansa'S, have in#` vented anew andinproved'Needle-'Sharpener, ofV which the following is' `a` full, clear,an'dcxact desk'zri'ption.Y c,

'My invention'relates Jto adevice for sharpening the needles oftalkin-gv machines and more particularly the dei/"eis intended for the--sharpening of' ompioisi'tion needles largely employed owing to .theirbeing less harsh on the recordthan ste'elneedles.l .The

sharpening of the composition needle on emery paper is ordinarilyattended with great dii'liculty in the effort to produce a uniformt-aper on the needle, without which there is not a uniform soundproduced, and there is a. liability of injuring the more delicatemembers of the record.

The prime object of my invention is to provide a. sharpening devicewhereby the needles may be given a desired taper and the sharpening beaccomplished with facility, accuracy and despatch.

A more specific object of the invention is to provide a durable deviceof the indicated character` and made up of very simple elements, wherebyit may be cheaply produced.

Reference is to be had to the accompanying drawings forming a part ofthis specification in which similar reference characters indicatecorresponding parts in all the views, it being understood that thedrawings are merely illustrative of one example of the invention.

Figure 1 is a perspective view of a needle Sharpener embodying myinvention;

Fig. 2 is a longitudinal vertical section on the line 2-2, Fig. 1;

Fig. 3 is a transverse section on the line 3-3, Fig. 1;

Fig. 4 is a. perspective view of part of the chuck holder. y

In carrying out my invention in accordance with the illustratedexample,asuitable frame or base is provided which may consist of anoblong block 10. The front end 11 of the block provides an upstandingelevated support for receiving a. suitable sharpening medium such as apiecejof emery paper 12 which is removably held in position by aclamping cap 13, the center of which is open to expose the emery paper'the sides or which' present" depending "flanges .tt'ed sn gly onto thetop 4of the vsaid endfpci'r'- To' hpld a needle A, an elongated chucklfl is proyided, 'the front" end of which may have' anyapprv'e'd'meansfor holding`t-lie needle, there being conventionallyindicated in the prese'r'it instance as at 15 an axial hole or socket.The Chuck 1:4, forits major por#v tion, is'prelfer'ably round crosssectionfto f'acilitater itsbeiiig'v turned between the fingers. Neartherearnend the chuck is formed an annular groove 16 and at said groovedportion the chuck is received in an upstanding holder or carrierdesignated generally by the numeral 17, the upper end of which is formedwith a concaved depression as at 18 to receive the chuck. Said carrier17 is hinged to the base 10 in any suitable manner as at 19 whereby thecarrier may bc rocked forwardand back to carry the point of the needleforward and back over the surface of the emery paper 12. The height ofthe carrier 17 relatively to the supported emery paper is such that thechuck and needle will assume an inclined position. Suitable provision ismade to vary the height o-f the chuck carrier 17 for which purpose theupper end 17 n thereof may be in the fo-rm of an extension piece whichis vertically adjustable, there being a vertical slot 20 in the member17a and receiving a wing screw 21, or the like, which is threaded intothe body of the carrier near the upper end.

lVith the described construction the needle having been placed in thechuck and the grooved portion 16 of the latter received in thedepression 18 of the carrier, the said carrier is rocked forward andback and at the same time the chuck is turned about its own aXis.Obviously the taper may be varied by adjusting the effective height ofthe carrier 17 to vary the pitch of the chuck and needle.

In order to limit the forward and backward movements of the carrier 17 Iprovide stops on the base 10 and these desirably may take the form, asshown, of Ornamental brackets 22 separated to permit the necessarylimited movement of the carrier. By limiting the movements of thecarrier the needle point is prevented from being dam` Y llO rection andprevented from being moved rearwardly oil' the said clamp 13.

In practice I provide the base with tapered sockets 23 constitutinggages, Whereby to insert the point of the needle in the sockets so thatthe needle may be inserted only to the proper extent in the chuck. Thegage sockets 23 may be formed vertically in the top surface of the baseas indicated in Figs. 2 and 3, and these sockets may be of varyingdepths. Also, a similar gage socket 24 may be produced in-a side, orsides, of the elevated front end l1 or other part of the base.

I Wish to state in conclusion that although the illustrated exampleconstitutes a practical embodiment of my invention, I do not Wish tolimit myself strictly to the mechanical details herein illustrated,since manifestly the same can be considerably varied Without departurefrom the yspirit of the invention as defined in the appended claims.

Having thus described my invention, I

claim as new, and desire to secure by Letters Patent:

l. A needle Sharpener includinga base having sharpening means thereon, achuck adapted at its front end to receive a needle to be sharpened, andmeans to support the chuck for reciprocating movement to subject theneedle to the action of the sharpening means, the said base having gagesockets therein adapted to receive a needle point.

2. A needle Sharpener including a base having sharpening means thereon,a chuck adapted at its front end to receive a 4needle to be sharpenedand formed with an annular groove rearward of the front end, a chuckcarrier hingedly supported to reciprocate the chuck and subject theneedle to the action of the sharpening means, and an eXtension piece onthe upper end of the carrier and vertically adjustable thereon, said eX-tension piece having a depression receiving the grooved portion of thechuck.

FREDERICK WILLIAM BOOKING.

@epics of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, E. G.

